/Engine/Source/Editor/UnrealEd/Classes/Editor/TransBuffer.h
Transaction tracking system, manages the undo and redo buffer.
class UTransBuffer : public [UTransactor](API\Editor\UnrealEd\Editor\UTransactor)
int32
ActiveCount
Number of actions in the current transaction
TArray< int32 >
ActiveRecordCounts
The cached count of the number of object records each time a transaction is begun
SIZE_T
MaxMemory
Maximum number of bytes the transaction buffer is allowed to occupy
FText
ResetReason
Text describing the reason that the undo buffer is empty
TArray< int32 >
UndoBarrierStack
Undo barrier stack
TArray<TShared...
UndoBuffer
Variables.
int32
UndoCount
Number of transactions that have been undone, and are eligible to be redone